Rational Modulation of Interface Microenvironment and Design of the Flow Electrolyzer for CO _x Electroreduction to Alcohol

Abstract The electrocatalytic reduction of CO _x (including CO ₂ and CO) into value‐added fuels and chemicals, particularly multi‐carbon (C ₂₊ ) alcohols, presents a significant opportunity to close the manmade carbon cycle and support sustainable energy systems. The catalytic performance of electrochemical reduction reactions of CO ₂ and CO (CO _x RR) is strongly correlated with the local microenvironments, the flow electrolyzer, and the catalysis approaches with flow electrolyzers, which contribute to the kinetic and thermodynamic landscape of the reaction, ultimately determining the efficiency and selectivity of the CO _x RR toward desired reduction products. However, controllable microenvironment construction, rationally designed flow electrolyzers, and matchable flow electrolyzers derived catalysis approaches chosen for improving CO _x RR‐to‐alcohol performance still face challenges. Building upon the foundation laid by previous research, this review article will provide an in‐depth summary of the regulation of the catalytic reaction interface microenvironment, the design of flow electrolyzers, and the development of derived stepwise catalysis approaches with the flow electrolyzers, which provide a comprehensive and strategic approach to enhancing the CO _x RR process for alcohol production, offering valuable insights and innovative solutions that can significantly impact the field of CO _x RR conversion to alcohol and contribute to the development of more sustainable chemical production methods.